Research on Interference Coordination Optimization Strategy for User Fairness in NOMA Heterogeneous Networks

In order to comprehensively improve the performance of edge users in heterogeneous cellular networks and fairness network users, a downlink interference coordination optimization strategy with non-orthogonal multiple access (NOMA) based on cell range expansion (CRE) almost blank subframe (ABS) technology is proposed. Different from traditional strategy, NOMA user pairing scheme combined ABS dynamic power allocation are designed maximize optimized throughput users. The simulation results show that proposed can balance more effectively than other algorithms without complexity being increased.